Lineage.LKJ

It spreads and affects other computers.
It searches for and steals passwords saved for certain Windows services.
It generates a large amount of network traffic activity with the consequent consumption of bandwidth.
It uses stealth techniques to avoid being detected by the user.
It spreads
, across the Internet, via mapped drives, through shared network resources, by infecting files that are then distributed.

Affected platforms:

Windows 2003/XP/2000/NT/ME/98/95;
IIS

First detected on:

April 16, 2010

Detection updated on:

April 16, 2010

Statistics

No

Brief Description

Lineage.LKJ is a worm that spreads by copying itself, without infecting other files.

It captures certain information entered or saved by the user, with the corresponding threat to privacy:
passwords saved by certain Windows services.

In the local network:
it generates a large amount of network activity and consumes bandwidth.

It uses stealth techniques to avoid being detected by the user:

It uses techniques included in its code to hide itself while it is active.

It injects itself in running processes.

It deletes the original file from which it was run once it is installed on the computer.

It modifies system permissions in order to hide itself.

Lineage.LKJ uses the following propagation or distribution methods:

Exploiting vulnerabilities with the intervention of the user: exploiting vulnerabilities in file formats or applications. To exploit them successfully it needs the intervention of the user: opening files, viewing malicious web pages, reading emails, etc.

Via Internet, exploiting remote vulnerabilities: attacking random IP addresses, in which it tries to insert a copy of itself by exploiting one or more vulnerabilities.